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ssh_known_hosts (29) Versions 1.0.2

Dyanmically generates /etc/ssh/ssh_known_hosts based on search indexes

Berkshelf/Librarian
Policyfile
Knife
cookbook 'ssh_known_hosts', '= 1.0.2'
cookbook 'ssh_known_hosts', '= 1.0.2', :supermarket
knife cookbook site install ssh_known_hosts
knife cookbook site download ssh_known_hosts
README
Dependencies
Quality

ssh_known_hosts Cookbook

The Chef ssh_known_hosts cookbook exposes resource and default recipe for adding hosts and keys to the /etc/ssh_known_hosts file.

  • The default recipe builds /etc/ssh/known_hosts based on search indexes and ohai data.
  • The LWRP provides a way to add custom entries in your own recipes.

You can also optionally put other host keys in a data bag called "ssh_known_hosts". See below for details.

Requirements

Should work on any operating system that supports /etc/ssh/ssh_known_hosts.

The Opscode partial_search cookbook is required for the default recipe, as well as a Chef Server that supports partial search:

  • Opscode Hosted Chef
  • Opscode Private Chef
  • Open Source Chef Server 11

Usage

LWRP

Use the LWRP ssh_known_hosts_entry to append an entry for the specified host in /etc/ssh/ssh_known_hosts. For example:

ssh_known_hosts_entry 'github.com'

This will append an entry in /etc/ssh/ssh_known_hosts like this:

# github.com SSH-2.0-OpenSSH_5.5p1 Debian-6+squeeze1+github8
github.com ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAq2A7hRGmdnm9tUDbO9IDSwBK6TbQa+PXYPCPy6rbTrTtw7PHkccKrpp0yVhp5HdEIcKr6pLlVDBfOLX9QUsyCOV0wzfjIJNlGEYsdlLJizHhbn2mUjvSAHQqZETYP81eFzLQNnPHt4EVVUh7VfDESU84KezmD5QlWpXLmvU31/yMf+Se8xhHTvKSCZIFImWwoG6mbUoWf9nzpIoaSjB+weqqUUmpaaasXVal72J+UX2B+2RPW3RcT0eOzQgqlJL3RKrTJvdsjE3JEAvGq3lGHSZXy28G3skua2SmVi/w4yCE6gbODqnTWlg7+wC604ydGXA8VJiS5ap43JXiUFFAaQ==

You can optionally specify your own key, if you don't want to use ssh-keyscan:

ssh_known_hosts_entry 'github.com' do
  key 'node.example.com ssh-rsa ...'
end

LWRP Attributes

<table> <thead> <tr> <th>Attribute</th> <th>Description</th> <th>Example</th> <th>Default</th> </tr> </thead>

<tbody> <tr> <td>host</td> <td>the host to add</td> <td><tt>github.com</tt></td> <td></td> </tr> <tr> <td>key</td> <td>(optional) provide your own key</td> <td><tt>ssh-rsa ...</tt></td> <td><tt>ssh-keyscan -H #{host}</tt></td> </tr> </tbody> </table>


Default Recipe

Searches the Chef Server for all hosts that have SSH host keys and generates an /etc/ssh/ssh_known_hosts.

Adding custom host keys

There are two ways to add custom host keys. You can either use the provided LWRP (see above), or by creating a data bag called "ssh_known_hosts" and adding an item for each host:

{
  "id": "github",
  "fqdn": "github.com",
  "rsa": "github-rsa-host-key"
}

There are additional optional values you may use in the data bag:

<table> <thead> <tr> <th>Attribute</th> <th>Description</th> <th>Example</th> <th>Default</th> </tr> </thead>

<tbody> <tr> <td>id</td> <td>a unique id for this data bag entry</td> <td><tt>github</tt></td> <td></td> </tr> <tr> <td>fqdn</td> <td>the fqdn of the host</td> <td><tt>github.com</tt></td> <td></td> </tr> <tr> <td>rsa</td> <td>the rsa key for this server</td> <td><tt>ssh-rsa AAAAB3...</tt></td> <td></td> </tr> <tr> <td>ipaddress</td> <td>the ipaddress of the node (if fqdn is missing)</td> <td><tt>1.1.1.1</tt></td> <td></td> </tr> <tr> <td>hostname</td> <td>local hostname of the server (if not a fqdn)</td> <td><tt>myserver.local</tt></td> <td></td> </tr> <tr> <td>dsa</td> <td>the dsa key for this server</td> <td><tt>ssh-dsa ABAAC3...</tt></td> <td></td> </tr> </tbody> </table>

License and Authors

Copyright:: 2011-2013, Opscode, Inc

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

Dependent cookbooks

partial_search >= 0.0.0

Contingent cookbooks

builder Applicable Versions
config-driven-helper Applicable Versions
deploy-user Applicable Versions
eucalyptus Applicable Versions
git_user Applicable Versions
github_connector Applicable Versions
github_users Applicable Versions
gitolite-server Applicable Versions
hadoop_for_hbase Applicable Versions
jenkins_drupal Applicable Versions
nodestack Applicable Versions
prun-cfg Applicable Versions
rdiff-backup Applicable Versions
resin Applicable Versions
stack-base Applicable Versions

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